Muffler.



PATENTED NOV. 1, 1904 E. G. RICHARD.

MUFFLER.

APPLICATION I'ILED.JAN. 11, 1904.

, no MODEL.

oaoaaeoooo oo@oo e %a m M m 73:; ch coral UNITED STATES PatentedNovember 1, 19041:-

PATENT OEEIcE.

EUGENE C. RICHARD, OF DETROIT, MICHIGAN, ASSIGNOR TO THE BUICK MOTORCOMPANY, OF- DETROIT, MICHIGAN, A CORPORA- TION OF MICHIGAN.

MUFFLER.

SPECIFICATION forming part of Letters Patent No. 773,984, dated November1, 1904. Application filed January 11, 1904. Serial No. 188,569. (Nomodel.)

To all whom it may concern:

Be it known that I, EUGENE C. RICHARD, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Mufliers, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

The invention relates to muflilers especially designed for use inconnection with explosionengines; and it is the object of the inventionto obtain a construction in which the noise of the explosion iseliminated as far as possible and without producing back pressure uponthe engine.

WVith this object in view the invention consists in the peculiarconstruction, arrangement, and combination of parts, as hereinafter setforth.

In the drawings, Figure 1 is a longitudinal section through the muffler.Fig. 2 is a crosssection thereof. Fig. 3 is an enlarged Viewillustrating the discharge-tubes, and Fig. Iis a perspective view of oneof the dischargenozzles.

A is the exhaust-conduit, and Bis the muffler secured thereto. Thismuflier comprises a tube a of preferably the same diameter as that ofthe conduit A and connected to the latter in axial alinement. of thetube a is closed by cap I).

0 represents a series of apertures formed in the tube a, in each ofwhich is secured a radially outwardly extending nozzle (Z. nozzles areformed of a round cross-section at their inner ends and flattened attheir outer, so that the opening is in the form of a narrow slit. Thenozzles are also preferably arranged in the series to have the slitsalternately turned in different directions.

6 is a cylindrical casing inclosing the tube a and nozzles (Z.

f and g, are heads closing the opposite ends of the cylinder, the head fhaving oppositelyextending nipples l1, thereon, which form the couplingmeans between the conduit A'and tube a.

i represents tubes arranged longitudinally products is formed.

The opposite end These of the cylinder between the rows of nozzles Z andextending outward through the heads f and q. These tubes 2' areperforated, as indicated at f.

In operation the exhaust from the conduit A entering the tube a will bedischarged from the nozzles (Z in a series of thin radially-directedjets. The number of jets is such that their combined area is in excessof the area of cross-section of the conduit A, and thus very littleresistance to the discharge of the The gaseous products discharged fromthe jets is confined within the outer drum 0, but is permitted to escapethrough the perforations 1' into the tubes e,

which are open to atmosphere. The effect of discharging the gases in theform of thin ets is to cause the rapid cooling and contraction of thegases, thereby reducing the volume of gas which is eventually dischargedthrough the tube What I claim as my invention is* 1. In a muffler thecombination with a discharge-conduit of a casing inclosing the same, anda plurality of flattened discharge-nozzles within said casing andconnected to said conduit.-

2. In'a muflier the combination with a discharge-conduit of a pluralityof flattened discharge-nozzles connected to said conduit and extendingradially therefrom and a cylindrical casing inclosing said conduit, anddischargenozzles, and provided with discharge-openings.

8. In a muflier the combination with a discharge-conduit of a pluralityof longitudinally-extending series of flattened dischargenozzles eachnozzle being connected with said conduit and extending radiallytherefrom, a casing inclosing said conduit, and dischargenozzles, and aperforated discharge-conduit within said casing intermediate saiddischargenozzles.

4. A muflier comprising a discharge-conduit and a plurality of flattenednozzles connected thereto, and adapted to discharge the products in thinjets.

5. A muffler comprising a discharge-conduit and a plurality of nozzlesround in crossing inclosing' said conduit and discharge-nozsection attheir connection to the conduit and zlcs, and a perforateddischarge-conduit ex- Jiattened at their discharge ends. tendinglongitudinally of the casing between ("3. A inuliler comprising ad1seharge-coneach ad accnt series of nozzles. 5 duit and a plurality offlattened alternately- In testimonywhereoir Iafhx my signature 1n 5arranged nozzles connected thereto. i

l In a inufller, the combination With a d1scharge-conduit, of aplurality of long1tudi-v l \VIUIQSSGSZ presence of two witnesses.

EUGENE O. RIOHAR D.

nally-extending series of oppositely-disposed nozzles extendlng radiallytherefrom, a cas- JAS. P. BARRY, EMMA I. BARNES.

